X2 on that. I have the same one with a probe in it.. I can tow my 30 foot 12000 lb trailer and not hit over 125 degrees.. Cheap mod for what your protecting!!

Shane

 

I just laugh at some of these people with the comments..

its cheap paint, NOT BECAUSE OF HEAT...

wow

 

, Yeah that can't get hot,,, can it??

 

Luvnacumns, I am not stealing the thread, but how do you like that trailer hitch? I just bought one, but have not used it yet. How much weight to you tow with it?
Thanks Larry

 

That picture of the hitch is actually mine not Luvnacumns. Anyway I really like it. Easy to adjust and looks great. I have the 10,000lb capacity hitch with 1500lb tongue weight and I have pulled 9000lb boat with 500lb tongue weight easily.

 

Where did yall get that kind of hitch and whats it called...I think that would be a lot better than what I have now ...

three different drops ,10",8" and 4"

 

Sorry about that nobull.

 

Its called a Rapid Hitch...here's the link to their site. You can find them on ebay sometimes or local hitch shops usually carry them. The hitch coemes in three lengths. Mine is the middle one, and make sure you get the locking pins. Total should be around $225.00+-.

http://ultrahitch.rpmsolutions.biz/index.cfm?section=73

 

It's good to know I amuse you.

I certainly agree that heat can cause paint to crack or peel. The paint they should be using on the rear diff and cover should be a high heat paint and shouldn't fail like it does consistently on our trucks. You can easily pick the paint off a brand new diff cover and it is obvious that they aren't prepping it very well before they spray it. Just tightening the cover bolts causes the paint to crack off.

It's certainly worth looking inside the pumpkin to make sure there are no problems, but as I stated before, it is more than likely poor paint work.

 

Lack of prep and crappy paint. Most likely, a water based paint to keep the evo-***** off their backs. There are a lot less restrictions on shooting a water-based paint.

 

If you wanna know what temp. your differential is running, put a temperature tape on it. It has 5 white squares on it that are in correlation to maximum temperature reached. Just put it on and drive the truck for several weeks. Pull with it, work it hard as you want to. Then next time you get under the truck, see which squares have turned black, thats your highest temp.
As for the paint, paint thats heated indirectly(hot fluid) will usually discolor... I see it all the time on new engines after they are warmed up and loaded really hard the first time. That Hy-Tec cover is sweet!!!.. Thats what I'm gonna put on my truck when I change differential fluid.
Does anybody kknow if the clearance issues with the front differential cover have been corrected yet?????

 

how many miles do you have on yours? is it a mall crawler?

my 4x4 with 4:10's burnt it off like candy,
i put cheap paint on, then high temp exhaust paint, and finally BBQ grill paint on it,
because the 4x4 sat so high, the rust was prominent.

maybe sanding it would have made it last, but it baked them all off.

my 4x2 3:73 is the same after 12k miles and only ~1k of them towing heavy.
can't see it, don't matter.

 

I agree with poorman.. another idea i had was temp sticks.. ( like a big crayon that is white at normal temp and melts clear when designated temp of mark is reached) we use them a lot when we have to preheat the iron before welding. They are cheap and available at any welding store or hardware store that sells welding equip.

 

If in doubt:

REDLINE SHOCKPROOF HEAVY

Toughest gear lube sold, imo.

 

I monitor my rear diff temp with a gauge - never seen it go higher than 150*, but expect closer to 200* when towing heavy in the TX heat.

Peeling paint is one thing, but it shouldn't be discoloring/burning due to heat - that'd be well over 200* for sure, which isn't right.

I think 75/140 is the way to go, and of course RP or Redline helps, too.

On a related note, my pet paint peeve with DC is how they leave so much raw steel uncoated under the truck... I mean gimme a break, with the hydro-based paint technology we have - the environmental costs of painting the parts become insignificant in relation to the old paint systems!